冀教版·英语八年级下册《Unit 5 Great inventions》练习题

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本单元考点（4 个）

谈论伟大发明及其用途一般过去时描述发明史被动语态基本用法表达观点：重要的发明

本单元练习题（27 题）

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1. In our school's Science Week, students discussed great inventions. Tom said, 'The light bulb ______ by Edison in 1879, and now it ______ in almost every home.' Choose the correct option to complete his words. A. was invented; is used B. invented; is used C. was invented; used D. invented; used

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2. 根据句意和首字母补全单词：In 1876, people i________ the telephone.（发明了）

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3. 同学们在讨论重要的发明。哪句话表达了对一项重要发明的观点并说明了理由？ A. I think the telephone is important because it helps people talk over long distances. B. The telephone was invented many years ago. C. How do people use a telephone? D. My telephone is on the desk.

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4. 补全句子中描述发明史的动词，每空填写一个词。In 1876, Bell i______ the telephone. In 1903, the Wright brothers f______ their first powered airplane. In 1928, Fleming d______ penicillin.

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5. The mobile phone ______ in 1973, and now it is used all over the world. A. invents B. invented C. is invented D. was invented

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6. 同学们在讨论重要的发明。哪句话表达了对一项重要发明的观点并说明了理由？A. A camera can take pictures of people and places. B. I think the bicycle is an important invention because it helps people travel without using fuel. C. How many people use computers every day? D. Please tell me who invented the telephone.

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7. The street lights in this town ______ on automatically every evening when it gets dark. They were designed to save energy. A. turn B. are turned C. turned D. were turned

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8. For the school invention show, a tiny fan ___ (build) by our class last Friday.

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9. Choose the correct sentence to describe the history of an invention. A. The first camera invents in 1816. B. The first camera was invent in 1816. C. The first camera was invented in 1816. D. The first camera is invented in 1816.

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10. 用所给动词的适当形式填空：Paper ___ (invent) in China about 2,000 years ago.

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11. 根据句意，用括号中动词的适当形式填空：In 1879, Thomas Edison ___ (invent) a useful electric light bulb.

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12. 同学们要为校园发明展选出一项重要发明。Lily认为，停电时也能用手电筒看清路；请用括号中的词语完成她表达观点的句子，每个词用一次：I ___ (think / the flashlight / is / important / because / it / helps / us / see / in / the dark).

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13. 选择正确答案：These small robots ______ in our school every year. A. make B. are made C. is made D. made

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14. 根据句意和句中被动语态，补全单词：A new kind of clock was inv__ted last year.（发明）

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15. Ben ___ (believe / the / radio / is / important) because it brings news to people.

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16. 班级讨论哪项发明重要。Mia认为自行车能帮助人们出行，想表达自己的观点。用括号中的词补全句子，每词用一次：I ___ ___ the bicycle is an important invention because it helps people travel. (think, that)

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17. 同学们讨论生活中的重要发明。请根据中文提示补全句子，写出完整单词：In my o____（观点）, the washing machine is an i________（重要的）invention.

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18. 在英语课上，同学们用所给单词的正确形式补全表达观点的句子（每空不限词数，每词限用一次）：think, important, because。Tom: I ___ the computer is one of the most ___ inventions ___ it helps people work and study anywhere.

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19. 根据中文提示写出所缺单词，补全表达观点的句子： 1. The I____（互联网）is an important i____（发明）because it helps us get information quickly. 2. I b____（相信）the printing press was really i____（重要的）in history. 3. In my o____（观点），the a____（飞机）is one of the most useful inventions in the world.

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20. The first practical battery did not exist before 1800. In that year, Alessandro Volta ___ (create) one.

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21. Complete the sentence with the missing word. A t________ helps people talk to each other over long distances.

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22. 根据中文提示补全单词，完成表达观点的句子：1. The c___ is a great invention（发明）because people can take photos with it. 2. In my o___, the car is an important i___（发明）because it makes travel faster.

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23. The school’s science club has two jobs: observe the Moon from the playground and study tiny plant parts in the lab. To do these jobs, students need a ___ to see faraway objects and a ___ to see very small objects.

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24. Leo wants to take photos of birds far away and then put the photos on paper. Which inventions are useful for both jobs? A. A telescope and a computer. B. A camera and a printer. C. A radio and a printer. D. A camera and a washing machine.

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25. 根据时间提示，用括号中动词的适当形式填空。Today, Lina’s workshop produces solar-powered bags. In 2019, it ___ (produce) its first one.

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26. 在学校发明展上，一台能自动给植物浇水的小机器上个月由学生制作，并且每周五都由他们进行测试。用括号内动词的适当形式填空：The small machine ___ (make) by the students last month, and it ___ (test) by them every Friday.

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27. 同学们讨论重要的发明。哪句话表达了“我认为电话是一项重要的发明，因为它能帮助人们远距离交谈”这一观点？A. In my opinion, the telephone is an important invention because it helps people talk over long distances. B. The telephone was invented many years ago. C. People use the telephone to call their friends. D. The telephone is on the desk.

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